title: Time-resolved MR angiography for detecting and grading ovarian venous reflux: comparison with conventional venography.
abstract: OBJECTIVE
  The purpose of this study was to compare the diagnostic accuracy of time-resolved MR angiography (TR-MRA) with that of conventional venography for the detection and grading of ovarian venous reflux, which aid in the diagnosis of pelvic venous congestion.
  
  
  METHODS
  We performed a retrospective analysis of 19 consecutive patients who underwent TR-MRA and conventional venography. The images were analysed by two radiologists in a randomised "blinded" manner. With the use of conventional venography as a gold standard, the images were reviewed to determine if differences in the detection and grading of ovarian venous reflux were seen between TR-MRA and conventional venography; the sensitivity, specificity and accuracy of TR-MRA compared with that of conventional venography were evaluated. The McNemar test was performed to determine the significance of any differences. Interobserver agreement was analysed using generalised κ statistics.
  
  
  RESULTS
  There was no significant difference between TR-MRA and conventional venography for grading ovarian venous reflux (p>0.05). The sensitivity, specificity and diagnostic accuracy of TR-MRA were found to be 66.7%, 100% and 78.9%, and 75%, 100% and 84.2%, respectively, for the two observers. The weighted κ-values indicated excellent agreement between the two observers for grading ovarian venous reflux on TR-MRA (κ = 0.894).
  
  
  CONCLUSIONS
  TR-MRA is an accurate method for accessing pelvic venous congestion.
authors.affiliation: Department of Radiology, Kyung Hee University East-West Neo Medical Center, Seoul, Republic of Korea.
authors.forename: D M
authors.initials: DM
authors.lastname: Yang
authors.forename: H C
authors.initials: HC
authors.lastname: Kim
authors.forename: D H
authors.initials: DH
authors.lastname: Nam
authors.forename: G H
authors.initials: GH
authors.lastname: Jahng
authors.forename: C Y
authors.initials: CY
authors.lastname: Huh
authors.forename: J W
authors.initials: JW
authors.lastname: Lim
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D006940:Hyperemia / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008875:Middle Aged; D010053:Ovary / Q000098:blood supply*; D017699:Pelvic Pain / Q000209:etiology; D010388:Pelvis; D010690:Phlebography; D015203:Reproducibility of Results; D012189:Retrospective Studies; D013997:Time Factors